CN205538150U - Rotatory coarse unit of active type of reinforcing wind tunnel test turbulence scale - Google Patents
Rotatory coarse unit of active type of reinforcing wind tunnel test turbulence scale Download PDFInfo
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- CN205538150U CN205538150U CN201620097850.2U CN201620097850U CN205538150U CN 205538150 U CN205538150 U CN 205538150U CN 201620097850 U CN201620097850 U CN 201620097850U CN 205538150 U CN205538150 U CN 205538150U
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- turbulivity
- fan blade
- wind tunnel
- roughness element
- tunnel test
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Abstract
The utility model provides a rotatory coarse unit of active type of reinforcing wind tunnel test turbulence scale, include, support and top part, support and top part are connected perpendicularly through the rotation axis respectively, wherein, evenly set up the fan blade of three bending on the rotation axis, and the top and the top part of fan blade are connected, and the top and the support of fan blade leave the clearance. And application method, include, set up air velocity transducer and turbulence scale sensor by the measurement station, through the feedback of turbulence scale sensor, come the rotational speed of control motor to the purpose turbulence scale of being wanted, by the lower part of measurement station at the building, wherein, when the turbulence scale undersize, control module sends acceleration signal to the motor, when the turbulence scale was too big, control module sent the reduced speed signal to the motor to, the accurate determination of turbulence scale.
Description
Technical field
The utility model belongs to Wind Engineering field, particularly to a kind of active rotation strengthening wind tunnel test turbulivity
Turn roughness element.
Background technology
Wind tunnel test is the main research means in Wind Engineering field, with the simulated experiment hand of atmospheric boundary layer wind tunnel
Section is possible not only to carry out atmospheric turbulance boundary layer, DIFFUSION IN TURBULENCE, tail and object by wind resistance, dynamic response etc.
The research of theoretical side, and substantial amounts of application study can be carried out.
At present, the wind tunnel simulation of atmospheric boundary layer is for the wind load of building, the diffusion of atmosphere pollution matter and one
The research of a little environmental science even military project etc. has particularly important meaning, and its analogy method also enjoys scholar
Concern.In existing analogy method, actively analogy method and passive simulation method can be roughly divided into
Two types.The principle of passive simulation method is to utilize specific device wind field to be carried out blocking in various degree and makes
There is shear layer in wind field wind speed, and a small amount of kinetic energy is converted into the pulsating energy of turbulent flow, thus realizes atmospheric boundary
The simulation of layer.In passive simulation method, the method being most frequently with is vortex generator, baffle plate and roughness element
Combination.Roughness element mainly applies in wind tunnel experiment near the ground upper such as meadow, trees, building etc., can be with shadow
Ring the turbulence intensity of wind near the ground.
The effect of roughness element is to block air flowing, and constitutes rapids because of its border or the boundary layer separation on surface
Stream eddy generator, owing to the yardstick of roughness element is less, so within its effect is confined to certain height, but
It is that bottom turbulivity is big owing to actual atmospheric boundary layer is exactly that bottom wind velocity gradient is big, and due to model
Size limited by wind-tunnel blocking rate and can not ratio very big, so in wind-tunnel the effect of bottom wind field is more
Important, the effect of roughness element should not be underestimated.Generally, the size of roughness element is 100 × 100 × 100mm
Cube, orderly is arranged in test section front.
CN101377447A discloses a kind of rough element apparatus with variable rotary-out type wind tunnel, comprising: multiple coarse
Unit, plate with opening, lower flat board (or framework) and four critical pieces of hinge.It is characterized in that: roughness element is shaped as
Quadrant shell of column, a straight flange of this roughness element is hinged on plate with opening, and another straight flange is hinged on to be put
On lower flat board (or framework) parallel with it under plate with opening；Plate with opening fixing peace concordant with wind-tunnel base plate
Dress, lower flat board (or framework) is moved to a direction and is just made roughness element screw out from the upper surface of perforated panel, by changing
The amount of movement becoming lower flat board changes the back-out amount of roughness element, thus changes the roughness of whole perforated panel, at wind
Hole can be formed the air-flow near the ground of all kinds of simulation of atmospheric boundary layer.This device can realize coarse quickly and easily
The step-less adjustment of unit's height.
CN204882029U discloses the wind field arrangement of a kind of vast scale and high turbulent flow.It is included in hole body
The several vertical wedge that lateral separation, ground is evenly arranged；One piece of sawtooth baffle plate it is fixed with in the bottom of wedge,
The middle and upper part of wedge is fixed with another block transverse baffle；Number row it is provided with between wedge and the rotating disk of test chamber
Roughness element, roughness element is three kinds of different size of squares, carries out size, dilute close different according to test requirements document
Roughness element arranges conversion；Three-dimensional fluctuating wind speed instrument, three-dimensional fluctuating wind speed instrument have been positioned vertically above it in center of turntable
It is fixed on the cross bar of lifting instrument, the liftoff 10cm of probe of three-dimensional fluctuating wind speed instrument, just to carrying out flow path direction, lifting
Instrument is arranged on a side of hole body；Described three-dimensional fluctuating wind speed instrument is connected with data collecting system.
Prior art generally there is problems in that 1, the turbulence intensity of wind near the ground is affected little by roughness element.
2, the size of roughness element, spacing change the impact of turbulence intensity little, sensitive not.3, roughness element mould
Certain gap is had under bottom turbulence intensity and the actual conditions intended.
Summary of the invention
The technical problem existed in view of prior art, the utility model provides a kind of enhancing wind tunnel test turbulivity
Active rotation roughness element and using method, roughness element is made the form of similar fan, can rotate.Will
It is fixed on special bearing, by the structure of fan bar Yu bearing, it is ensured that it can only turn along the direction specified
Dynamic, the rotation direction of adjacent two row's roughness element is contrary.So, the effect of roughness element can both be played, again
Can cut and flow wind, increase the disorderly degree of wind, thus increase near surface turbulence intensity.
Specifically, the utility model is achieved through the following technical solutions:
A kind of active rotation roughness element strengthening wind tunnel test turbulivity, including, bearing and top component,
Seat connects by rotary shaft is vertical respectively with top component, wherein, rotary shaft is uniformly arranged the wind of three bendings
Fan leaf, the top of fan blade is connected with top component, and top and the bearing of fan blade leave gap.
Wherein, the height ratio of preferably height of roughness element and fan blade is preferably 10:7.
Specifically preferably roughness element height 100mm, wherein the height of the fan blade of three bendings is 70mm, the end
Portion's bearing thickness is 20mm, and blade is 10mm with the gap of bearing.
In above-mentioned preferred version, further preferred blade edge is 40mm from rotary shaft, a diameter of 20mm of rotary shaft；
Bearing is the cylinder of an a diameter of 100mm, internal by Motor Control, rotates for fan blade and provides dynamic
Power, top component is an a diameter of 100mm, and thickness is the circular cover of 5mm.
The effect of upper fan blade be circumgyration incision to flow wind, increase wind disorderly degree；The effect of cover plate is
In order to prevent the updraft of the excessive generation of wind speed from destroying wind profile.
Described fan blade, by being connected with the motor at lower seat, controls rotating speed and direction of rotation.
The direction of rotation of fan blade is controlled by the sense of current controlled at lower seat.Another preferred version
Can also arrange by the fissure of displacement for fan blade, each row are controlled by a motor.
The material of top rotary shaft and fan blade is the PVC material of lightweight；Lower seat is wooden or metal
Material, has certain mass and makes it to fix on the ground.
Another object of the present utility model is to provide a kind of active rotation strengthening wind tunnel test turbulivity thick
The using method of rough unit, including, measured point (preferably measured point is positioned at the bottom of building, away from ground 100mm)
Air velocity transducer and turbulivity sensor are set, by the feedback of turbulivity sensor, control the rotating speed of motor,
Thus obtaining the purpose turbulivity wanted, measured point is in the bottom of building.
Flow process order is as follows: turbulivity sensor → control module → motor.
Wherein, when turbulivity is too small, control module sends signal for faster to motor；When turbulivity is excessive,
Control module sends reduce-speed sign to motor.
The utility model relative to the beneficial effect of prior art, including:
1, can limit the direction of rotation of fan, and make the direction of rotation of the roughness element of two adjacent groups contrary；
2, the directional rotating of roughness element and blade are to flowing the cutting of wind, can increase to flow down portion's turbulence intensity；
3, bottom turbulence intensity in various degree can be obtained by regulating the rotating speed of fan.
Accompanying drawing explanation
Fig. 1 parts are arranged and test flow chart
Fig. 2 roughness element front view
Fig. 3 fan blade configurations schematic diagram
Fig. 4 bearing schematic diagram
Fig. 5 roughness element arrangement top view
Fig. 6 roughness element arrangement stereogram
Fig. 7 roughness element and building arrangement schematic diagram, wherein measured point is in the bottom of building, mainly has wind
Speed sensor and turbulivity sensor
The sequential flowchart of a kind of work of Fig. 8 experiment
What Fig. 9 another kind work was tested makees sequential flowchart
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but the reality of utility model
The mode of executing is not limited to this.
Embodiment 1
As shown in Fig. 1,2,3 and 4, a kind of active rotation roughness element strengthening wind tunnel test turbulivity, bag
Including, bearing and top component, bearing connects by rotary shaft is vertical respectively with top component, wherein, and rotary shaft
On be uniformly arranged three bending fan blade, the top of fan blade is connected with top component, fan blade
Top and bearing leave gap.
Roughness element height 100mm, wherein the height of the fan blade of three bendings is 70mm, and bottom support bracket thickness is
20mm, blade is 10mm with the gap of bearing.
In above-mentioned preferred version, further preferred blade edge is 40mm from rotary shaft, a diameter of 20mm of rotary shaft；
Bearing is the cylinder of an a diameter of 100mm, internal by Motor Control, rotates for fan blade and provides dynamic
Power, top component is an a diameter of 100mm, and thickness is the circular cover of 5mm.
Described fan blade, by being connected with the motor at lower seat, controls rotating speed and direction of rotation.
The material of top rotary shaft and fan blade is the PVC material of lightweight；Lower seat is wood materials, tool
Certain mass is had to make it to fix on the ground.
Embodiment 2
A kind of active rotation roughness element strengthening wind tunnel test turbulivity as described in Example 1, wherein, with
Unlike it, fan blade can also arrange by the fissure of displacement, and each row are controlled by a motor.
Embodiment 3
Fig. 5, shown in 6 and 7, wherein, a kind of active rotation strengthening wind tunnel test turbulivity of embodiment 1
Turn roughness element to be arranged in order.
Embodiment 4
Fig. 5, shown in 6 and 7, wherein, a kind of active rotation strengthening wind tunnel test turbulivity of embodiment 2
Turn roughness element to be arranged in order.
Embodiment 5
Such as Fig. 5, shown in 6 and 7, wherein, a kind of of embodiment 1 strengthens the active of wind tunnel test turbulivity
Rotation roughness element is arranged in order.
The using method of a kind of active rotation roughness element strengthening wind tunnel test turbulivity is provided, including, at quilt
Measuring point arranges air velocity transducer and turbulivity sensor, by the feedback of turbulivity sensor, controls motor
Rotating speed, thus obtain the purpose turbulivity wanted, measured point is in the bottom of building.Preferably measured point is positioned at figure
The bottom of building on the right side of in the of 7, away from ground 100mm.
Flow process order is as follows: turbulivity sensor → control module → motor.
Wherein, when turbulivity is too small, control module sends signal for faster to motor；When turbulivity is excessive,
Control module sends reduce-speed sign to motor.
Embodiment 6
Such as Fig. 5, shown in 6 and 7, wherein, a kind of of embodiment 2 strengthens the active of wind tunnel test turbulivity
Rotation roughness element is arranged in order.
The using method of a kind of active rotation roughness element strengthening wind tunnel test turbulivity is provided, including, at quilt
Measuring point arranges air velocity transducer and turbulivity sensor, by the feedback of turbulivity sensor, controls motor
Rotating speed, thus obtain the purpose turbulivity wanted, measured point is in the bottom of building.Preferably measured point is positioned at figure
The bottom of building on the right side of in the of 7, away from ground 100mm.
Flow process order is as follows: turbulivity sensor → control module → motor.
Wherein, when turbulivity is too small, control module sends signal for faster to motor；When turbulivity is excessive,
Control module sends reduce-speed sign to motor.
Sum up: can be obtained by the flexibility of aforementioned active rotation roughness element regulation fan blade and length
Building bottom turbulence intensity in various degree.
Above content is to combine the further details of theory that the utility model is done by concrete preferred embodiment
Bright, but do not indicate that of the present utility model being embodied as is limited to these explanations.For belonging to the utility model
For restraining the those of ordinary skill of neck, without departing from the concept of the premise utility, it is also possible to if making
Dry simple deduction or replacement, be regarded as belonging to protection domain of the present utility model.
Claims (7)
1. the active rotation roughness element strengthening wind tunnel test turbulivity, it is characterised in that include, bearing
With top component, bearing and top component connect by rotary shaft is vertical respectively, wherein, rotary shaft uniformly sets
Put three bending fan blade, the top of fan blade is connected with top component, the top of fan blade with prop up
Seat leaves gap.
A kind of active rotation roughness element strengthening wind tunnel test turbulivity the most according to claim 1, its
Being characterised by, the preferably height ratio of height of roughness element and fan blade is preferably 10:7.
A kind of active rotation roughness element strengthening wind tunnel test turbulivity the most according to claim 1, its
Being characterised by, roughness element height 100mm, wherein the height of the fan blade of three bendings is 70mm.
A kind of active rotation roughness element strengthening wind tunnel test turbulivity the most according to claim 1, its
Being characterised by, bottom support bracket thickness is 20mm, and blade is 10mm with the gap of bearing.
A kind of active rotation roughness element strengthening wind tunnel test turbulivity the most according to claim 1, its
Being characterised by, blade edge is 40mm from rotary shaft, a diameter of 20mm of rotary shaft.
A kind of active rotation roughness element strengthening wind tunnel test turbulivity the most according to claim 1, its
Being characterised by, bearing is the cylinder of an a diameter of 100mm, and inside is connected with motor, by motor control,
For fan blade powered rotation, top component is an a diameter of 100mm, and thickness is the circular lid of 5mm
Plate.
A kind of active rotation roughness element strengthening wind tunnel test turbulivity the most according to claim 1, its
Being characterised by, the material of top rotary shaft and fan blade is the PVC material of lightweight；Lower seat be wooden or
Metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620097850.2U CN205538150U (en) | 2016-01-29 | 2016-01-29 | Rotatory coarse unit of active type of reinforcing wind tunnel test turbulence scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620097850.2U CN205538150U (en) | 2016-01-29 | 2016-01-29 | Rotatory coarse unit of active type of reinforcing wind tunnel test turbulence scale |
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| CN201620097850.2U Withdrawn - After Issue CN205538150U (en) | 2016-01-29 | 2016-01-29 | Rotatory coarse unit of active type of reinforcing wind tunnel test turbulence scale |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675248A (en) * | 2016-01-29 | 2016-06-15 | 哈尔滨工业大学深圳研究生院 | Active-type rotation roughness element for realizing turbulence quantitative control and use method thereof |
| RU2802983C1 (en) * | 2023-02-15 | 2023-09-05 | Федеральное государственное бюджетное учреждение науки Институт проблем механики им. А.Ю. Ишлинского Российской академии наук (ИПМех РАН) | Shock tube |
-
2016
- 2016-01-29 CN CN201620097850.2U patent/CN205538150U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675248A (en) * | 2016-01-29 | 2016-06-15 | 哈尔滨工业大学深圳研究生院 | Active-type rotation roughness element for realizing turbulence quantitative control and use method thereof |
| CN105675248B (en) * | 2016-01-29 | 2018-05-11 | 哈尔滨工业大学深圳研究生院 | A kind of active rotation roughness element and application method for realizing turbulivity quantified controlling |
| RU2802983C1 (en) * | 2023-02-15 | 2023-09-05 | Федеральное государственное бюджетное учреждение науки Институт проблем механики им. А.Ю. Ишлинского Российской академии наук (ИПМех РАН) | Shock tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20180511 |